Flirting isn't always the be way to get what you want in life, but today it could be the most effective! As long as you aren't making promises to someone that you don't intend to keep, there is absolutely nothing wrong with putting a smile on their face in order to make them highly amenable to what you want. You know how to push someone's buttons, and they won't mind if you push them today. There's nothing wrong with that arrangement.